openinverter.org wiki - User contributions [en]

Volvo Power Steering Pump

2025-02-18T22:45:33Z

Projectgus: Got the model wrong in my last edit...

== Part Numbers and Versions ==
[[Category:Volvo]]
[[Category:Power Steering]]
{| class="wikitable"
|+Part Numbers<ref>https://rusefi.com/forum/viewtopic.php?p=45946#p45946</ref>
!Part Number
!Vehicle Used in
!Comment
|-
|30636927
|2004-2013 C30 C70 V50 S40
|unverified
|-
|31202520
|2004-2013 C30 C70 V50 S40
|unverified
|-
|36000075
|2004-2013 C30 C70 V50 S40
|unverified
|-
|36000116
|2004-2013 C30 C70 V50 S40
|unverified
|-
|36000772
|2004-2013 C30 C70 V50 S40
|unverified
|-
|36000801
|2004-2013 C30 C70 V50 S40
|unverified
|-
|36001211
|2004-2013 C30 C70 V50 S40
|unverified
|-
|36001485
|2004-2013 C30 C70 V50 S40
|unverified
|-
|36002698
|2004-2013 C30 C70 V50 S40
|unverified
|-
|36050678
|2004-2013 C30 C70 V50 S40
|unverified
|-
|8603041
|2004-2013 C30 C70 V50 S40
|unverified
|-
|8603274
|2004-2013 C30 C70 V50 S40
|unverified
|}

== Electrical Connection ==
Input signals, start and stop conditions described in S40 service manual<ref>https://www.volvo-forums.com/attachments/s40my2005_suspensionsteering-pdf.7233/</ref>

The harness for the motor supply can be bought completely (Volvo Part Number: 30775461 <ref>https://usparts.volvocars.com/p/Volvo_2007_C30-24l-5-cylinder/Wiring-Harness-Cable-Harness-Power-Steering-Pump-Electrohydraulic-Power-Steering-Service-Solution-Servo-Pump/42906949/30775461.html (Backup: )</ref>) or just the connector. There is connector kits available online (avoid the pig-tail version as the cable is way undersized. [https://www.ebay.de/itm/264183247309?_nkw=Electric+Power+Steering+%28EPS%29+Pump+Wire+Connector+Kit+Type+1+Fit+for+Volvo+Ford&itmmeta=01J64V8R3PQKQS2EKGFX7V5BVM&hash=item3d828c71cd:g:9YsAAOSwkvtb3Qd3&itmprp=enc%3AAQAJAAABMHoV3kP08IDx%2BKZ9MfhVJKnq1cduF5WgneJWcf2KOIwYLjdi97A8lf5OlJCgf3lStwgB7DXBbzWP5qft6Wq1wk68P2yrbn6NspdbHXbMs%2Fo1lKpey0MBk2Dqf%2BYimnPZ2JcaYs6l1vtYvLq%2FTbkcfppJYbhQ6U1IcaY0%2BTcZ1LLNcMEsG1cAazAwdRpglFiU3VmsIb3MOC9ZgJtYJ0XEm8XvmXBFsGZb9PJlyyXlp5YtkKGxAAM0H0gjTcEUfTXFlbl8jiyw3ziYa%2FjJuc2Db%2B15Kf%2BAQY%2FhWSFyBkaSZK1%2FUit%2FC2tF3wKqv2UPWRrfcw1BV%2BWd1HzbLSbvObyYLAklc%2FNhtRoWci2FP0azltlwmEtiiOaGp4YI1cFSiJtqqDMZeeZSWI8j0AvO6hbAROI%3D%7Ctkp%3ABk9SR4CCo5uxZA Link])
[[File:Volvo eps connections.png|thumb|2011 Volvo S40 T5 Pump connectors]]

=== Connector A (Power)<ref name=":0">Volvo C30 2007 Schematic, TP39103202</ref> ===
{| class="wikitable"
|+Pinout
!Pin Number
!Cable Color
!Function
!Comment
|-
|1
|Red
| Permanent +12V for Motor
|Fused with 80A fuse (F2)
|-
|2
|Black
|GND
|
|}
{| class="wikitable"
|+
Volvo Part Numbers
!Part
!Part Number
!Comment
|-
|Housing
|31266849<ref>https://usparts.volvocars.com/p/Volvo_2007_C30-24l-5-cylinder/Receptacle-Housing-Cable-Harness-Engine-Component-Parts-Electrical-Power-Steering-Module-EPS/42815694/31266849.html</ref>
|Not verified, possibly different plug?
|-
|Housing
|30728420<ref>https://usparts.volvocars.com/p/Volvo_2011_S60-30l-6-cylinder-Turbo/Receptacle-Housing-Cable-Harness-Engine-Compartment-Component-Parts-Connector-Control-Module-Power-Steering-EHPS-Electrical-Power-Steering-Module-EPS-/42878531/30728420.html</ref>
|Not verified
|}
{| class="wikitable"
|+OEM (Yazaki) Part Numbers
!Part
!Part Number
!Comment
|-
|Housing
|7283-2918-10<ref>https://connector.yazaki-group.com/cgi-bin/english/detail.cgi?part_id=7283-2918-10</ref>
|Also in black, P/N 7283-2918-30
|-
|Terminals
|7116-3250<ref>https://connector.yazaki-group.com/cgi-bin/english/detail.cgi?part_id=7116-3250</ref>
|For 8mm2 wire
|-
|Wire Seals
|7158-3610-80<ref>https://connector.yazaki-group.com/cgi-bin/english/detail.cgi?part_id=7158%2D3610%2D80</ref>
|For 8mm2 wire
|}
Note: Some later Volvo models use a similar variant of this pump which has a different shaped (smooth housing body) Connector A. Not known if the CAN protocol is different.

=== Connector B (Control)<ref name=":0" /> ===
{| class="wikitable"
|+Pinout
!Pin Number
!Cable Color
!Function
!Comment
|-
|1
|Grey-Blue
|Ignition +12V for Control
|Fused with 10A fuse (F53).
|-
|2
|
|CAN-L
|
|-
|3
|
|CAN-H
|
|}

A visual guide of the pinout can be found on [https://www.maxxecu.com/webhelp/can_peripheral_control_volvo_powersteering.html this MaxxECU online help page]
{| class="wikitable"
|+
Volvo Part Numbers
!Part
!Part Number
!Comment
|-
|Connector
|31346135<ref>https://usparts.volvocars.com/p/Volvo_2007_C30-24l-5-cylinder/Receptacle-Housing-Electric-Power-Steering-EPAS-Electrical-Power-Steering-Module-PSCM/65250641/31346135.html</ref>
|Not verified
|}
{| class="wikitable"
|+OEM (Yazaki) Part Numbers
!Part
!Part Number
!Comment
|-
|Housing
|7283-8730-30<ref>https://connector.yazaki-group.com/cgi-bin/english/detail.cgi?part_id=7283-8730-30</ref>
|
|-
|Terminals
|7116-1680-02<ref>https://connector.yazaki-group.com/cgi-bin/english/detail.cgi?part_id=7116%2D1680%2D02</ref>
|
|-
|Wire Seals
|7157-3951-60<ref>https://connector.yazaki-group.com/cgi-bin/english/detail.cgi?part_id=7157%2D3951%2D60</ref>
|
|}

== CAN Bus Control ==
If it doesn't receive CAN messaging then the pump will run in "limp mode" at 75% of full speed.<ref>https://www.corral.net/threads/volvo-electric-power-steering-conversion-full-write-up.2499503/page-4?post_id=18735339#post-18735339</ref>

The CAN bus protocol has been reverse engineered in the RusEFI forum<ref>https://www.rusefi.com/forum/viewtopic.php?f=4&t=2329</ref> and a LUA script example exists<ref>https://github.com/rusefi/rusefi/blob/master/firmware/controllers/lua/examples/Volvo-electric-power-steering-pump.txt</ref>

Alternatively, there is an implementation using Arduino code<ref>https://github.com/NMSTEC/Volvo_EPS_FREE</ref>
== Mechanical Properties ==

=== Dimensions ===
Approx. 12" x 7" x 7" (305mm x 178mm x 178mm)

=== Fittings ===

* High pressure side (pump supply/outlet): M16x1.5 (you can use adapters like this one: https://www.ebay.de/itm/192079081475)
* Low pressure side (pump return/inlet) is just a hose. The fitting on the reservoir is likely 10mm (3/8").

=== Mounting Bracket ===
WillFab Motorsport (WFM) produces a universal fit bracket for this pump. Available [https://towytrailercentre.co.uk/products/volvo-electric-power-steering-pump-bracket-s40-v50-c30-c70-mount-drift-rally-wfm here] and [https://www.ebay.co.uk/str/wfmttc here].

== Fluid ==
Pentosin CHF 202 is spec'd in the Volvo manual.

== References ==
<references />

Volvo Power Steering Pump

2025-02-18T22:32:58Z

Projectgus: Noted which car in the photo caption

== Part Numbers and Versions ==
[[Category:Volvo]]
[[Category:Power Steering]]
{| class="wikitable"
|+Part Numbers<ref>https://rusefi.com/forum/viewtopic.php?p=45946#p45946</ref>
!Part Number
!Vehicle Used in
!Comment
|-
|30636927
|2004-2013 C30 C70 V50 S40
|unverified
|-
|31202520
|2004-2013 C30 C70 V50 S40
|unverified
|-
|36000075
|2004-2013 C30 C70 V50 S40
|unverified
|-
|36000116
|2004-2013 C30 C70 V50 S40
|unverified
|-
|36000772
|2004-2013 C30 C70 V50 S40
|unverified
|-
|36000801
|2004-2013 C30 C70 V50 S40
|unverified
|-
|36001211
|2004-2013 C30 C70 V50 S40
|unverified
|-
|36001485
|2004-2013 C30 C70 V50 S40
|unverified
|-
|36002698
|2004-2013 C30 C70 V50 S40
|unverified
|-
|36050678
|2004-2013 C30 C70 V50 S40
|unverified
|-
|8603041
|2004-2013 C30 C70 V50 S40
|unverified
|-
|8603274
|2004-2013 C30 C70 V50 S40
|unverified
|}

== Electrical Connection ==
Input signals, start and stop conditions described in S40 service manual<ref>https://www.volvo-forums.com/attachments/s40my2005_suspensionsteering-pdf.7233/</ref>

The harness for the motor supply can be bought completely (Volvo Part Number: 30775461 <ref>https://usparts.volvocars.com/p/Volvo_2007_C30-24l-5-cylinder/Wiring-Harness-Cable-Harness-Power-Steering-Pump-Electrohydraulic-Power-Steering-Service-Solution-Servo-Pump/42906949/30775461.html (Backup: )</ref>) or just the connector. There is connector kits available online (avoid the pig-tail version as the cable is way undersized. [https://www.ebay.de/itm/264183247309?_nkw=Electric+Power+Steering+%28EPS%29+Pump+Wire+Connector+Kit+Type+1+Fit+for+Volvo+Ford&itmmeta=01J64V8R3PQKQS2EKGFX7V5BVM&hash=item3d828c71cd:g:9YsAAOSwkvtb3Qd3&itmprp=enc%3AAQAJAAABMHoV3kP08IDx%2BKZ9MfhVJKnq1cduF5WgneJWcf2KOIwYLjdi97A8lf5OlJCgf3lStwgB7DXBbzWP5qft6Wq1wk68P2yrbn6NspdbHXbMs%2Fo1lKpey0MBk2Dqf%2BYimnPZ2JcaYs6l1vtYvLq%2FTbkcfppJYbhQ6U1IcaY0%2BTcZ1LLNcMEsG1cAazAwdRpglFiU3VmsIb3MOC9ZgJtYJ0XEm8XvmXBFsGZb9PJlyyXlp5YtkKGxAAM0H0gjTcEUfTXFlbl8jiyw3ziYa%2FjJuc2Db%2B15Kf%2BAQY%2FhWSFyBkaSZK1%2FUit%2FC2tF3wKqv2UPWRrfcw1BV%2BWd1HzbLSbvObyYLAklc%2FNhtRoWci2FP0azltlwmEtiiOaGp4YI1cFSiJtqqDMZeeZSWI8j0AvO6hbAROI%3D%7Ctkp%3ABk9SR4CCo5uxZA Link])
[[File:Volvo eps connections.png|thumb|Volvo S60 Pump connectors]]

=== Connector A (Power)<ref name=":0">Volvo C30 2007 Schematic, TP39103202</ref> ===
{| class="wikitable"
|+Pinout
!Pin Number
!Cable Color
!Function
!Comment
|-
|1
|Red
| Permanent +12V for Motor
|Fused with 80A fuse (F2)
|-
|2
|Black
|GND
|
|}
{| class="wikitable"
|+
Volvo Part Numbers
!Part
!Part Number
!Comment
|-
|Housing
|31266849<ref>https://usparts.volvocars.com/p/Volvo_2007_C30-24l-5-cylinder/Receptacle-Housing-Cable-Harness-Engine-Component-Parts-Electrical-Power-Steering-Module-EPS/42815694/31266849.html</ref>
|Not verified, possibly different plug?
|-
|Housing
|30728420<ref>https://usparts.volvocars.com/p/Volvo_2011_S60-30l-6-cylinder-Turbo/Receptacle-Housing-Cable-Harness-Engine-Compartment-Component-Parts-Connector-Control-Module-Power-Steering-EHPS-Electrical-Power-Steering-Module-EPS-/42878531/30728420.html</ref>
|Not verified
|}
{| class="wikitable"
|+OEM (Yazaki) Part Numbers
!Part
!Part Number
!Comment
|-
|Housing
|7283-2918-10<ref>https://connector.yazaki-group.com/cgi-bin/english/detail.cgi?part_id=7283-2918-10</ref>
|Also in black, P/N 7283-2918-30
|-
|Terminals
|7116-3250<ref>https://connector.yazaki-group.com/cgi-bin/english/detail.cgi?part_id=7116-3250</ref>
|For 8mm2 wire
|-
|Wire Seals
|7158-3610-80<ref>https://connector.yazaki-group.com/cgi-bin/english/detail.cgi?part_id=7158%2D3610%2D80</ref>
|For 8mm2 wire
|}
Note: Some later Volvo models use a similar variant of this pump which has a different shaped (smooth housing body) Connector A. Not known if the CAN protocol is different.

=== Connector B (Control)<ref name=":0" /> ===
{| class="wikitable"
|+Pinout
!Pin Number
!Cable Color
!Function
!Comment
|-
|1
|Grey-Blue
|Ignition +12V for Control
|Fused with 10A fuse (F53).
|-
|2
|
|CAN-L
|
|-
|3
|
|CAN-H
|
|}

A visual guide of the pinout can be found on [https://www.maxxecu.com/webhelp/can_peripheral_control_volvo_powersteering.html this MaxxECU online help page]
{| class="wikitable"
|+
Volvo Part Numbers
!Part
!Part Number
!Comment
|-
|Connector
|31346135<ref>https://usparts.volvocars.com/p/Volvo_2007_C30-24l-5-cylinder/Receptacle-Housing-Electric-Power-Steering-EPAS-Electrical-Power-Steering-Module-PSCM/65250641/31346135.html</ref>
|Not verified
|}
{| class="wikitable"
|+OEM (Yazaki) Part Numbers
!Part
!Part Number
!Comment
|-
|Housing
|7283-8730-30<ref>https://connector.yazaki-group.com/cgi-bin/english/detail.cgi?part_id=7283-8730-30</ref>
|
|-
|Terminals
|7116-1680-02<ref>https://connector.yazaki-group.com/cgi-bin/english/detail.cgi?part_id=7116%2D1680%2D02</ref>
|
|-
|Wire Seals
|7157-3951-60<ref>https://connector.yazaki-group.com/cgi-bin/english/detail.cgi?part_id=7157%2D3951%2D60</ref>
|
|}

== CAN Bus Control ==
If it doesn't receive CAN messaging then the pump will run in "limp mode" at 75% of full speed.<ref>https://www.corral.net/threads/volvo-electric-power-steering-conversion-full-write-up.2499503/page-4?post_id=18735339#post-18735339</ref>

The CAN bus protocol has been reverse engineered in the RusEFI forum<ref>https://www.rusefi.com/forum/viewtopic.php?f=4&t=2329</ref> and a LUA script example exists<ref>https://github.com/rusefi/rusefi/blob/master/firmware/controllers/lua/examples/Volvo-electric-power-steering-pump.txt</ref>

Alternatively, there is an implementation using Arduino code<ref>https://github.com/NMSTEC/Volvo_EPS_FREE</ref>
== Mechanical Properties ==

=== Dimensions ===
Approx. 12" x 7" x 7" (305mm x 178mm x 178mm)

=== Fittings ===

* High pressure side (pump supply/outlet): M16x1.5 (you can use adapters like this one: https://www.ebay.de/itm/192079081475)
* Low pressure side (pump return/inlet) is just a hose. The fitting on the reservoir is likely 10mm (3/8").

=== Mounting Bracket ===
WillFab Motorsport (WFM) produces a universal fit bracket for this pump. Available [https://towytrailercentre.co.uk/products/volvo-electric-power-steering-pump-bracket-s40-v50-c30-c70-mount-drift-rally-wfm here] and [https://www.ebay.co.uk/str/wfmttc here].

== Fluid ==
Pentosin CHF 202 is spec'd in the Volvo manual.

== References ==
<references />

Volvo Power Steering Pump

2025-02-18T22:30:06Z

Projectgus: /* Electrical Connection */ Added OEM electrical connector parts and a labelled photo of pump

== Part Numbers and Versions ==
[[Category:Volvo]]
[[Category:Power Steering]]
{| class="wikitable"
|+Part Numbers<ref>https://rusefi.com/forum/viewtopic.php?p=45946#p45946</ref>
!Part Number
!Vehicle Used in
!Comment
|-
|30636927
|2004-2013 C30 C70 V50 S40
|unverified
|-
|31202520
|2004-2013 C30 C70 V50 S40
|unverified
|-
|36000075
|2004-2013 C30 C70 V50 S40
|unverified
|-
|36000116
|2004-2013 C30 C70 V50 S40
|unverified
|-
|36000772
|2004-2013 C30 C70 V50 S40
|unverified
|-
|36000801
|2004-2013 C30 C70 V50 S40
|unverified
|-
|36001211
|2004-2013 C30 C70 V50 S40
|unverified
|-
|36001485
|2004-2013 C30 C70 V50 S40
|unverified
|-
|36002698
|2004-2013 C30 C70 V50 S40
|unverified
|-
|36050678
|2004-2013 C30 C70 V50 S40
|unverified
|-
|8603041
|2004-2013 C30 C70 V50 S40
|unverified
|-
|8603274
|2004-2013 C30 C70 V50 S40
|unverified
|}

== Electrical Connection ==
Input signals, start and stop conditions described in S40 service manual<ref>https://www.volvo-forums.com/attachments/s40my2005_suspensionsteering-pdf.7233/</ref>

The harness for the motor supply can be bought completely (Volvo Part Number: 30775461 <ref>https://usparts.volvocars.com/p/Volvo_2007_C30-24l-5-cylinder/Wiring-Harness-Cable-Harness-Power-Steering-Pump-Electrohydraulic-Power-Steering-Service-Solution-Servo-Pump/42906949/30775461.html (Backup: )</ref>) or just the connector. There is connector kits available online (avoid the pig-tail version as the cable is way undersized. [https://www.ebay.de/itm/264183247309?_nkw=Electric+Power+Steering+%28EPS%29+Pump+Wire+Connector+Kit+Type+1+Fit+for+Volvo+Ford&itmmeta=01J64V8R3PQKQS2EKGFX7V5BVM&hash=item3d828c71cd:g:9YsAAOSwkvtb3Qd3&itmprp=enc%3AAQAJAAABMHoV3kP08IDx%2BKZ9MfhVJKnq1cduF5WgneJWcf2KOIwYLjdi97A8lf5OlJCgf3lStwgB7DXBbzWP5qft6Wq1wk68P2yrbn6NspdbHXbMs%2Fo1lKpey0MBk2Dqf%2BYimnPZ2JcaYs6l1vtYvLq%2FTbkcfppJYbhQ6U1IcaY0%2BTcZ1LLNcMEsG1cAazAwdRpglFiU3VmsIb3MOC9ZgJtYJ0XEm8XvmXBFsGZb9PJlyyXlp5YtkKGxAAM0H0gjTcEUfTXFlbl8jiyw3ziYa%2FjJuc2Db%2B15Kf%2BAQY%2FhWSFyBkaSZK1%2FUit%2FC2tF3wKqv2UPWRrfcw1BV%2BWd1HzbLSbvObyYLAklc%2FNhtRoWci2FP0azltlwmEtiiOaGp4YI1cFSiJtqqDMZeeZSWI8j0AvO6hbAROI%3D%7Ctkp%3ABk9SR4CCo5uxZA Link])
[[File:Volvo eps connections.png|thumb|Pump connectors]]

=== Connector A (Power)<ref name=":0">Volvo C30 2007 Schematic, TP39103202</ref> ===
{| class="wikitable"
|+Pinout
!Pin Number
!Cable Color
!Function
!Comment
|-
|1
|Red
| Permanent +12V for Motor
|Fused with 80A fuse (F2)
|-
|2
|Black
|GND
|
|}
{| class="wikitable"
|+
Volvo Part Numbers
!Part
!Part Number
!Comment
|-
|Housing
|31266849<ref>https://usparts.volvocars.com/p/Volvo_2007_C30-24l-5-cylinder/Receptacle-Housing-Cable-Harness-Engine-Component-Parts-Electrical-Power-Steering-Module-EPS/42815694/31266849.html</ref>
|Not verified, possibly different plug?
|-
|Housing
|30728420<ref>https://usparts.volvocars.com/p/Volvo_2011_S60-30l-6-cylinder-Turbo/Receptacle-Housing-Cable-Harness-Engine-Compartment-Component-Parts-Connector-Control-Module-Power-Steering-EHPS-Electrical-Power-Steering-Module-EPS-/42878531/30728420.html</ref>
|Not verified
|}
{| class="wikitable"
|+OEM (Yazaki) Part Numbers
!Part
!Part Number
!Comment
|-
|Housing
|7283-2918-10<ref>https://connector.yazaki-group.com/cgi-bin/english/detail.cgi?part_id=7283-2918-10</ref>
|Also in black, P/N 7283-2918-30
|-
|Terminals
|7116-3250<ref>https://connector.yazaki-group.com/cgi-bin/english/detail.cgi?part_id=7116-3250</ref>
|For 8mm2 wire
|-
|Wire Seals
|7158-3610-80<ref>https://connector.yazaki-group.com/cgi-bin/english/detail.cgi?part_id=7158%2D3610%2D80</ref>
|For 8mm2 wire
|}
Note: Some later Volvo models use a similar variant of this pump which has a different shaped (smooth housing body) Connector A. Not known if the CAN protocol is different.

=== Connector B (Control)<ref name=":0" /> ===
{| class="wikitable"
|+Pinout
!Pin Number
!Cable Color
!Function
!Comment
|-
|1
|Grey-Blue
|Ignition +12V for Control
|Fused with 10A fuse (F53).
|-
|2
|
|CAN-L
|
|-
|3
|
|CAN-H
|
|}

A visual guide of the pinout can be found on [https://www.maxxecu.com/webhelp/can_peripheral_control_volvo_powersteering.html this MaxxECU online help page]
{| class="wikitable"
|+
Volvo Part Numbers
!Part
!Part Number
!Comment
|-
|Connector
|31346135<ref>https://usparts.volvocars.com/p/Volvo_2007_C30-24l-5-cylinder/Receptacle-Housing-Electric-Power-Steering-EPAS-Electrical-Power-Steering-Module-PSCM/65250641/31346135.html</ref>
|Not verified
|}
{| class="wikitable"
|+OEM (Yazaki) Part Numbers
!Part
!Part Number
!Comment
|-
|Housing
|7283-8730-30<ref>https://connector.yazaki-group.com/cgi-bin/english/detail.cgi?part_id=7283-8730-30</ref>
|
|-
|Terminals
|7116-1680-02<ref>https://connector.yazaki-group.com/cgi-bin/english/detail.cgi?part_id=7116%2D1680%2D02</ref>
|
|-
|Wire Seals
|7157-3951-60<ref>https://connector.yazaki-group.com/cgi-bin/english/detail.cgi?part_id=7157%2D3951%2D60</ref>
|
|}

== CAN Bus Control ==
If it doesn't receive CAN messaging then the pump will run in "limp mode" at 75% of full speed.<ref>https://www.corral.net/threads/volvo-electric-power-steering-conversion-full-write-up.2499503/page-4?post_id=18735339#post-18735339</ref>

The CAN bus protocol has been reverse engineered in the RusEFI forum<ref>https://www.rusefi.com/forum/viewtopic.php?f=4&t=2329</ref> and a LUA script example exists<ref>https://github.com/rusefi/rusefi/blob/master/firmware/controllers/lua/examples/Volvo-electric-power-steering-pump.txt</ref>

Alternatively, there is an implementation using Arduino code<ref>https://github.com/NMSTEC/Volvo_EPS_FREE</ref>
== Mechanical Properties ==

=== Dimensions ===
Approx. 12" x 7" x 7" (305mm x 178mm x 178mm)

=== Fittings ===

* High pressure side (pump supply/outlet): M16x1.5 (you can use adapters like this one: https://www.ebay.de/itm/192079081475)
* Low pressure side (pump return/inlet) is just a hose. The fitting on the reservoir is likely 10mm (3/8").

=== Mounting Bracket ===
WillFab Motorsport (WFM) produces a universal fit bracket for this pump. Available [https://towytrailercentre.co.uk/products/volvo-electric-power-steering-pump-bracket-s40-v50-c30-c70-mount-drift-rally-wfm here] and [https://www.ebay.co.uk/str/wfmttc here].

== Fluid ==
Pentosin CHF 202 is spec'd in the Volvo manual.

== References ==
<references />

File:Volvo eps connections.png

2025-02-18T22:14:57Z

Projectgus:

Labelled photo of connectors on a Volvo EPS pump from 2011 Volvo S40 T5.

BMW F-Series Gear Lever

2022-07-11T11:05:18Z

Projectgus:

==General Information==
Much of this information is based on articles by Project Gus <ref>https://www.projectgus.com/tag/bmw-f-series-gws.html</ref>. Thank you for reverse engineering!

===Pinout and Connector===
The BMW part number of the connector is 9132576-02, the TE part number is 2-929423-2 but the connector is not freely available from TE <ref>https://www.te.com/usa-en/product-2-929423-2.html</ref>.
{| class="wikitable"
|+Pinout
!Pin
!Wire Colour
!Function
!
|-
|1
|
|NC
|
|-
|2
|
|NC
|
|-
|3
|Red
|PT-CAN Low
|
|-
|4
|Blue/Red
|PT-CAN High
|
|-
|5
|White/Blue
|PT-CAN2 Low
|
|-
|6
|White/Yellow
|PT-CAN2 High
|
|-
|7
|Green/Brown
|Enable(?)
|
|-
|8
|Brown
|Ground
|
|-
|9
|
|NC
|
|-
|10
|Red/Blue
| +12V
|
|}

===CAN Bus===
The Powertrain CAN Bus has a baud rate of 500kBaud.

GWS sends a "heartbeat" to CAN ID 0x55e and more frequent 4-byte GWS status message to CAN ID 0x197:<ref>https://www.projectgus.com/2022/07/bmw-f-series-gear-selector-part-three-success/</ref>
{| class="wikitable"
!Status message Byte
!Meaning
|-
|0
|CRC8 of bytes 1-3 (poly=0x1d, init=0x0, xor=0x53)
|-
|1
|Counter value, 4 bits wide, should change each message, never 0x0F
|-
|2
|Lever position
|-
|3
|Park button (0xC0 normally, 0xD5 if Park is pressed)
|}
Lever position byte values include:
{| class="wikitable"
!Value
!Meaning
|-
|0x0E
|Centre middle
|-
|0x1E
|Pushed "up" (towards front of car)
|-
|0x2E
|Pushed "up" two notches
|-
|0x3E
|Pushed "down" (towards back of car)
|-
|0x4E
|Pushed "down" two notches
|-
|0x7E
|Centre side
|-
|0x5E
|Pushed "side and up"
|-
|0x6E
|Pushed "side and down"
|}
To update the GWS appearance, message ID 0x3FD has to be sent every 50-100ms:
{| class="wikitable"
!Byte
!Meaning
|-
|0
|CRC8 of bytes 1-4 (init=0x0, poly=0x1d, xor=0x53)
|-
|1
|4-bit counter (must increment each message), not 0x0F
|-
|2
|Payload byte 0
|-
|3
|Payload byte 1
|-
|4
|Payload byte 2
|}
Payload byte 0 controls the GWS appearance:
{| class="wikitable"
!Payload byte 0
!Display
|-
|0x00
|Blank gear selection (appears off)
|-
|0x20
|P
|-
|0x80
|D
|-
|0x81
|D, can move to M/S
|-
|0x81
|M/S (if lever moved to side)
|-
|0x40
|R
|-
|0x60
|N
|-
| + 0x08
|To flash the selected gear light
|}
Payload bytes 1 & 2 are ignored by the GWS.

==== CAN Diagnostics ====
BMW UDS uses "extended 11-bit ISO-TP addressing", and the GWS responds to at least some standard UDS requests sent to ID 0x5e (first byte of CAN messages).<ref>https://www.projectgus.com/2022/06/bmw-f-series-gear-selector-part-two-breakthrough/</ref>

==Part Numbers==
[[File:BMW F-Series Gear Selector.png|thumb|BMW F-Series Gear Selector (LHD Version) <ref>https://www.bmw-etk.info/parts-catalog/prd/BMW/VT/P/F20N/SH/125i/BRA/L/N/2015/05/57228/25/25_0519</ref>]]

{| class="wikitable"
|+
Normal Version
!No
!LHD/RHD
!Description
!Part Number
!Vehicles Used
!Status
!Tested
|-
|1
|RHD
|Gear Selector Switch
|61 31 9296897
|F20, F21, F22, F23
F30, F31, F32, F33, F34, F36
|Active
|
|-
|1
|RHD
|Gear Selector Switch
|61 31 9291519
|
|Until 06/2013
|
|-
|1
|RHD
|Gear Selector Switch
|61 31 9260969
|
|Until 08/2012
|
|-
|1
|RHD
|Gear Selector Switch
|61 31 9253652
|
|Until 01/2011
|
|-
|
|
|
|
|
|
|
|-
|1
|LHD
|Gear Selector Switch
|61 31 9296896
|F20, F21, F22, F23
F30, F31, F32, F33, F34, F36
|Active
|
|-
|1
|LHD
|Gear Selector Switch
|61 31 9291517
|
|Until 11/2012
|
|-
|1
|LHD
|Gear Selector Switch
|61 31 9260968
|
|Until 06/2013
|
|-
|1
|LHD
|Gear Selector Switch
|61 31 9253651
|
|Until 01/2011
|
|}

{| class="wikitable"
|+
Sport Version
!No
!LHD/RHD
!Description
!Part Number
!Vehicles Used
!Status
!Tested
|-
|2
|RHD
|Gear Selector Switch, Sport
|61 31 7950385
|
|Active
|
|-
|2
|RHD
|Gear Selector Switch, Sport
|61 31 9296899
|F20, F21, F22, F23
F30, F31, F32, F33, F34, F36
|Until 05/2018
|X
|-
|2
|RHD
|Gear Selector Switch, Sport
|61 31 9291521
|
|Until 11/2012
|
|-
|2
|RHD
|Gear Selector Switch, Sport
|61 31 9260971
|
|Until 07/2012
|
|-
|2
|RHD
|Gear Selector Switch, Sport
|61 31 9253654
|
|Until 01/2011
|
|-
|
|
|
|
|
|
|
|-
|2
|LHD
|Gear Selector Switch, Sport
|61 31 7950384
|
|Active
|
|-
|2
|LHD
|Gear Selector Switch, Sport
|61 31 9296898
|F20, F21, F22, F23
F30, F31, F32, F33, F34, F36
|Until 01/2019
|
|-
|2
|LHD
|Gear Selector Switch, Sport
|61 31 9291520
|
|Until 06/2013
|
|-
|2
|LHD
|Gear Selector Switch, Sport
|61 31 9260970
|
|Until 06/2013
|
|-
|2
|LHD
|Gear Selector Switch, Sport
|61 31 9253653
|
|Until 01/2011
|
|}

== References ==
<references />

[[Category:OEM]]
[[Category:BMW]]
[[Category:Accessories]]